65550939 has 16 divisors (see below), whose sum is σ = 90339072. Its totient is φ = 42247008.

The previous prime is 65550937. The next prime is 65550941. The reversal of 65550939 is 93905556.

It is an interprime number because it is at equal distance from previous prime (65550937) and next prime (65550941).

It is not a de Polignac number, because 65550939 - 2¹ = 65550937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65550939.

It is not an unprimeable number, because it can be changed into a prime (65550937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16282 + ... + 19904.

It is an arithmetic number, because the mean of its divisors is an integer number (5646192).

Almost surely, 2^65550939 is an apocalyptic number.

65550939 is a deficient number, since it is larger than the sum of its proper divisors (24788133).

65550939 is a wasteful number, since it uses less digits than its factorization.

65550939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3826.

The product of its (nonzero) digits is 182250, while the sum is 42.

The square root of 65550939 is about 8096.3534384314. The cubic root of 65550939 is about 403.2053683404.

The spelling of 65550939 in words is "sixty-five million, five hundred fifty thousand, nine hundred thirty-nine".